What's Strawberry Perl?
It is a Perl environment for MS Windows containing all you need to run and develop Perl applications. It is designed to be as close as possible to the Perl environment on UNIX systems.
It includes Perl binaries, a compiler (gcc) + related tools, all the external libraries (crypto, graphics, xml, etc), a lot of really great modules pre-installed, cpanm - a nice utility that makes module installation easier, all the bundled
I installed this before I found Strawberry Perl and I let it be because, thanks to Strawberry Portable Perl, multiple versions of Perl can peacefully co-exist. I had encountered a similar situation on one of our SAN Management Servers. ActiveState Perl was pre-installed by another application which happened to use it for some heavy text manipulating